Sylvestre has indeed quality passes but IMHO he is not a natural playmaker. He is DM/CM with good ofensive skills. Horvath? He is like a duck to water as a playmaker. They are different.
There is not a player in Sparta who could play like Horvath. Abraham, Huek and Sylvestre are all great (and better footballers than Horvath) but none of them is as creative as Pavel. And you could've seen it in Plzen. Bílek fielded Kisel-Abraham-Huek-Limberský and Sparta didn't have any 100% chance in the match.
I saw the derby Zizkov-Sparta. And Horvath even if he didn't run was one of the best in the match and a key player.
But I'm not saying it's impossible to play without a playmaker. Just look at the midfielders Sparta has. If you want to replace Horvath you have to rebuild the midfield.
RM: Kisel (Zofcak), (Kolar)
CM: Husek (Abraham)
CM: Sylvestre (Abraham)
LM: Matusovic (Limbersky)
Such midfield lacks something IMO. It's not so easy.
Anyway I don't understand why Sparta does not have a better player than Horvath on that possition. There are some even in our league.
Liberec: Hodúr (slim and weak though)
MB: Matějovský (sometimes risks too much)
Slavia: micer (injury prone)
Brno: Polách (loses many balls)
Baník: Luke (injured and also weak) and now Otepka (would he be good enough?)
Zlín: Opiela (never seen him play, dunno how good he is)
Nobody is perfect but neither is Horváth.
Why did Sparta want Abraham and Kúdela so much (when they already had players on their possitions) and on the other hand let Simák go with no replacement?