Nope, that would have a negative impact on the overall economy. By the 10th halving, you would have a block size of 1GB. That might or might not work depending on how technology progresses and if we really want to pursue layer 1 scaling for the long term. Having a long period of time between halving, and essentially a shock by having the block size doubling can't be good for Bitcoin. Congestion would either never appear in that 4 year period or will be prevalent from the on-start.

Reward halving has nothing to do with transaction volume. Instead, we have to focus on the factors affecting the transaction volume, which can be in the form of adoption rates, prices, market trends and they're hardly quantifiable. Hence why it is difficult to answer the questions in my post.