I am confident that the Bitcoin will not be any major changes.
This is an old and heavy coin with tightly in it ingrown specific Asic chips and different contradictory community.
Ongoing debates about the block size and the absence of agreement on this issue well demonstrated it.
Some alternative coins, on the other hand are more active and rapidly improving for taking all the best, and using the time-tested technical innovations.
So Bitcoin price growth will gradually slow down (in spite of the decrease awards in the coming time).
A qualitative altcoin with active communities will only get more expensive.