Putting aside the question of what the last instruction Jesus gave to His followers was, we know that in Acts 1:8 Jesus repeated the command to be His witnesses in all the Earth, just before He returned to Heaven. The critically important point was that they would be enabled to be Jesus' witnesses when the Holy Spirit came upon them with power. That is actually the reason why so many Christians are NOT actively being Jesus' witnesses today - they are not living in the power of the Holy Spirit. If they were, they would be bold, share the good news, baptize and make disciples.
Many have professed faith in Jesus after hearing the good news about Jesus, been baptized, started going to church but failed to become disciples themselves. And how can you disciple others if you have not been discipled yourself? Some groups try to avoid that by insisting people cannot be baptized until they have completed a study course, designed to get them knowing the answers to many theological questions. Yet they violate Jesus' command in Matthew 28 by doing that! How come? By putting events in the reverse order! They think they can make disciples first, and then baptize them. Not so. The profession of faith comes after hearing the gospel, people get baptized, and then they start to grow in knowledge and understanding of Christ. The Holy Spirit leads and teaches them. When men take things into their own hands, they change the order, and then wonder why they are so devoid of Holy Spirit power in their gatherings! Not that many of them worry about that - they count baptisms as 'proof' that God is pleased with them, so as long as the numbers keep growing, they care about little else.
I am deviating, but your question is fairly vast in its scope: "Is there any place in Christ's true Church for people who choose to 'sit ' in the same spiritual place (condition) or choose a limited level of commitment?" Of course there is. The place for such people is sitting down at a spiritual 'table' being spoon-fed. The only thing they learn from that is the size and shape of a spoon, of course. Yet if that is what they are content with, that is what they will get out of church. They will remain spiritual babies, of no use to others but needing to be cared for and carried about spiritually by mature Christians. The real question is whether the church should be doing that. If members of the church are not growing to maturity so that they can help others, then perhaps the church needs to keep welcoming them but not to be side-tracked from the great commission by them. They should steam on with reaching out into their communities with Christian witness (words and actions that show the spirit of Christ) but if some don't want to get involved, then just leave them to it.
The question of 'commitment' is a bit more tricky, though. Some people gage commitment via 'supporting' meetings and fund-raising events and other activities that actually have nothing to do with spreading the gospel and making disciples. Yet a person apparently not 'committed' to such things might be a prayer warrior in the privacy of their home, or reaching out to neighbors unbeknown to others in the church, and engaging in Bible study every day. It is not for us to judge others in that way but to set the right example, encourage others, but press on if they are reluctant so that we are not wasting our time on them. This does not rule out spending huge amounts of time supporting truly needy people in the church whose lives have all but been ruined, so that they could never be expected to be in the forefront of church 'events'. It's a complex question you have raised, and only the grace of God will enable mature Christians to lovingly deal with every type of person who comes into church buildings - for whatever reason - and irrespective of whether they strive to be disciples or not.