AD Sylas Consideration

I think it is really cool that Sylas has an automatic conversion in his ultimate that makes it so he can utilize ultimates that scale with AD ratios.

HOWEVER, ... what happens if Sylas is building AD?

Why not make an adaptive calculation so if Sylas has more AD than AP the copied ability continues to scale with the original AD ratios?

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It is actually very ironic that I am campaigning for this because it has always bothered me how significantly more champions in this game are viable using AD when compared to the number of champions that are not at all viable using AP. I guess I should just leave be happy that Sylas is going to be an addition to the rare exception to this rule, .. but .. I actually don't like when champions lack flexibility.

My rationality is that with an AP build he would have strong abilities that offer damage output, mobility, crowd control, as well as trigger a decently strong passive, and is viable, OR POTENTIALLY EVEN BETTER user of almost any ultimate than the champion he copies it from.

On the flip side, an AD build would have good sustained damge from auto attacks, and the use of abilities for weak damage output, but while maintaining mobility and crowd control, as well as triggering strong uses of his passive, and IDENTICAL value from AD scaling ultimate as the champion he is copying from.